WO2019060919A1 - Système de pont en bois modifié extérieur - Google Patents

Système de pont en bois modifié extérieur Download PDF

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Publication number
WO2019060919A1
WO2019060919A1 PCT/US2018/052747 US2018052747W WO2019060919A1 WO 2019060919 A1 WO2019060919 A1 WO 2019060919A1 US 2018052747 W US2018052747 W US 2018052747W WO 2019060919 A1 WO2019060919 A1 WO 2019060919A1
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WO
WIPO (PCT)
Prior art keywords
layers
layer
deck board
substrate
deck
Prior art date
Application number
PCT/US2018/052747
Other languages
English (en)
Inventor
Joshua JACKSON
Heidi M. Turner
Jr. Philip J. VACCA
Jarrod Kevin LINE
Gareth Paul MERRICK
Ashwin HIMATSINGANI
William Howard BAIRD
Jianwen Ni
Original Assignee
Louisiana-Pacific Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Louisiana-Pacific Corporation filed Critical Louisiana-Pacific Corporation
Publication of WO2019060919A1 publication Critical patent/WO2019060919A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E04F15/045—Layered panels only of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/042—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/13—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board all layers being exclusively wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/02177—Floor elements for use at a specific location
    • E04F15/02183—Floor elements for use at a specific location for outdoor use, e.g. in decks, patios, terraces, verandas or the like
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E04F15/045—Layered panels only of wood
    • E04F15/046—Plywood panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/08—Coating on the layer surface on wood layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/414—Translucent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/75—Printability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/045—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against fire

Definitions

  • This invention relates to a system for an exterior deck comprising engineered wood components.
  • the present invention comprises a system for constructing a deck using engineered wood products, including, but not limited to, all forms of structural composite lumber (SCL), oriented- strand lumber (OSL), oriented- strand board (OSB), laminated strand lumber (LSL), laminated veneer lumber (LVL), parallel strand lumber (PSL), laminated veneer bamboo (LVB), plywood, or products with cross-directional wood grains or fibers.
  • the deck boards (and upward facing surfaces of various deck components, such as, but not limited to, stair treads and rail tops) are constructed of a substrate comprising one or more of the engineered wood products described above.
  • the substrate wood comprises spruce, douglas fir, southern yellow pine, bamboo, or other suitable lignocellulosic wood or fiber material, or combinations thereof.
  • the substrate material is subject to treatment during manufacturing (e.g., addition of adhesives, fire retardants, and/or preservatives), with certain surfaces subject to application of one or more surface treatment system layers, including, but not limited to, a coating layer.
  • the substrate comprises a plurality of cross- directional layers which are treated with fire retardants/resistant treatments, preservatives and/or weather resistant chemicals, and assembled with adhesives binding the layers together in a stack.
  • Fire protection or resistance treatments include, but are not limited to, combustion resistance, flame spread resistance, and ignition resistance.
  • Preservatives and/or chemical treatments and/or fire retardants/resistant treatments may be added before and/or after assembly of the stack. Additionally, the type of treatment used may be different depending on the layer (e.g. veneer) to take advantage of the type of protection needed (e.g., decay resistance, insect resistance, fire protection, and the like). This results in a targeted, cost effective approach to substrate protection.
  • a deck board comprises eight layers of thin wood (e.g., veneers) assembled with adhesives, with some of the veneers stacked cross-directionally compared to the majority of the veneers.
  • the second and seventh veneer layers i.e., the veneer layers directly adjacent to the two outer face layers
  • the direction of the wood grain is cross-directional (i.e., at approximately right angles or 90 degrees) to the direction of the wood grain in the outer face layers (i.e., layers one and eight) and the more interior layers (i.e., layer three through six).
  • a similar cross-directional arrangement could be used with a deck board with a different number of layers, with the veneer layers directly adjacent to the outer face layers (i.e., the "one-in” layers) are positioned cross- directionally.
  • additional layers of the stack may be positioned cross-directionally, depending on the application.
  • the top and bottom surface layers are not positioned cross-directionally, as this may affect the surface appearance of the board (i.e., the wood grain running across the width of the board rather than running parallel to the length of the board), as well as its overall strength.
  • the benefits of this form of substrate are substantial. It allows the use of a variety of wood and non-wood species and smaller trees that cannot be used to make large- section solid sawn lumber and beams, with the surface appearance of a complete board with a common direction of wood grain.
  • the resulting board has improved dimensional stability and reduced warping (i.e., maintaining the orthogonality of the boards) with the addition of the cross-directional layers near the surface layers.
  • Preservatives and/or treatments may be added to the substrate which would normally be more difficult or costly in solid sawn lumber.
  • additives can be added more quickly or at a lower cost than by treating solid sawn lumber.
  • Treatments with various properties can be added at the glue line to provide additional properties.
  • Different substrate layers can have specific treatments distinct for other layers to provide unique properties in aggregate.
  • the top veneer can have preservatives and chemicals which impart surface hardness to the veneer, while the bottom veneer is treated with preservatives and fire retardants. The resulting product would be difficult or expensive to produce from solid sawn lumber.
  • veneers in different layers could be from different species or the same species cut with different methods.
  • the top veneer for example, could be provided with a linear cut naturally durable hardwood, while the remaining veneers can be from lower cost rotary peeled wood.
  • the deck boards and other deck components may further comprise a surface finishing system, including but not limited to an overlay or coating that provides or increases impact resistance, durability, aesthetics, fade protection, and stain resistance, while also covering and protecting joints or seams between veneers in a layer (e.g., where the pieces of veneer in a particular layer, such as the top surface layer, meet), or between layers of veneers (particularly along the sides or ends of a board). Covering these joints/seams also improves the visual appearance of the final product.
  • a surface finishing system including but not limited to an overlay or coating that provides or increases impact resistance, durability, aesthetics, fade protection, and stain resistance, while also covering and protecting joints or seams between veneers in a layer (e.g., where the pieces of veneer in a particular layer, such as the top surface layer, meet), or between layers of veneers (particularly along the sides or ends of a board). Covering these joints/seams also improves the visual appearance of the final product.
  • the surface finishing system comprises both an aesthetic component and a protective component, and may be applied to the bottom surface as well as the top surface. In additional embodiments, some or all elements of the surface finishing system may also be applied to the sides and ends of the deck board or component.
  • the aesthetic component comprises a base layer, which acts a primer or cushion layer which builds the foundation for the rest of the layers of the surface finishing system.
  • the base layer may be opaque.
  • a visually aesthetic layer may then be placed on the base layer.
  • the visually aesthetic layer can be a pre-printed paper layer, or can be printed directly onto to the base layer by means of a printer or printers in the manufacturing line.
  • high-resolution digital images are printed on the base layer to create a digitally reproduced board with a desired appearance (and, in some embodiments, texture). This can replicate the appearance and/or texture of any material.
  • a protective layer typically clear or translucent, such as translucent paper or a coating as described below
  • a deck board may have a unique profile in cross-section to wick moisture away from the deck board.
  • the profile comprises curved edges with a channel or concave indentation extending along the length of each board for hidden fasteners.
  • the width of the flat section of the bottom of the board may be less than the width of the flat section of the top.
  • Figure 1 shows a cross-sectional view of a layered deck board.
  • Figure 2 shows a profile view of a deck board.
  • Figures 3-6 shows cross-sectional views of alternative embodiments of a layered deck board.
  • Figure 7 shows a cross-sectional view of a layered deck board with surface finishing system components.
  • the present invention comprises a system for constructing a deck using engineered wood products, including, but not limited to, all forms of structural composite lumber (SCL), oriented- strand lumber (OSL), oriented- strand board (OSB), laminated strand lumber (LSL), laminated veneer lumber (LVL), parallel strand lumber (PSL), laminated veneer bamboo (LVB), plywood, or products with cross-directional wood grains or fibers.
  • the deck boards (and upward facing surfaces of various deck components, such as, but not limited to, stair treads and rail tops) are constructed of a substrate comprising one or more of the engineered wood products described above.
  • the substrate wood comprises spruce, douglas fir, southern yellow pine, bamboo, similar lignocellulosic wood or fiber material, or combinations thereof.
  • the substrate material is subject to treatment during manufacturing (e.g., addition of adhesives, preservatives, and/or fire retardants/resistant treatments), with certain surfaces subject to application of one or more surface treatment system layers, including, but not limited to, a coating layer.
  • the substrate 2 comprises a plurality of veneer layers (some cross-directional) which are treated with fire retardants/resistant treatments, preservatives and/or weather resistant chemicals, and assembled with adhesives binding the layers together in a stack.
  • Adhesives include, but are not limited to, phenol-formaldehyde (PF) resin.
  • Fire protection or resistance treatments include, but are not limited to, combustion resistance, flame spread resistance, and ignition resistance.
  • Preservatives and/or chemical treatments and/or fire retardants/resistant treatments may be added before and/or after assembly of the stack.
  • the type of treatment used may be different depending on the layer (e.g. veneer) to take advantage of the type of protection needed (e.g., decay resistance, insect resistance, fire protection, and the like). This results in a targeted, cost effective approach to substrate protection.
  • a deck board comprises eight layers of thin wood (e.g., veneers) assembled with adhesives, with some of the veneer layers stacked cross-directionally compared to the majority of the veneers.
  • the second 12 and seventh 17 veneer layers i.e., the veneer layers directly adjacent to the two outer face layers 11, 18
  • the direction of the wood grain is cross-directional (i.e., at approximately right angles or 90 degrees) to the direction of the wood grain in the outer face layers (i.e., layers one 11 and eight 18) and the more interior or "core" layers (i.e., layer three through six 13-16).
  • FIG. 3 and 6 it should be noted that a similar cross-directional arrangement could be used with a deck board with a different number of layers, with the veneer layers 30 directly adjacent to the outer face layers (i.e., the "one-in" layers) are positioned cross-directionally.
  • additional layers 32, 34 of the stack may be positioned cross-directionally, depending on the application.
  • the top and bottom surface layers are not positioned cross- directionally, as this affects the surface appearance of the board (i.e., the wood grain raining across the width of the board rather than running parallel to the length of the board), as well as its overall strength.
  • the benefits of this form of substrate are substantial. It allows the use of a variety of wood and non-wood species and smaller trees that cannot be used to make large- section solid sawn lumber and beams, with the surface appearance of a complete board with a common direction of wood grain.
  • the resulting board has improved dimensional stability and reduced warping (i.e., maintaining the orthogonality of the boards) with the addition of the cross-directional layers near the surface layers.
  • Preservatives and/or treatments may be added to the substrate which would normally be more difficult or costly in solid sawn lumber.
  • additives can be added more quickly or at a lower cost than by treating solid sawn lumber.
  • Treatments with various properties can be added at the glue line to provide additional properties.
  • Different substrate layers can have specific treatments distinct for other layers to provide unique properties in aggregate.
  • the top veneer can have preservatives and chemicals which impart surface hardness to the veneer, while the bottom veneer is treated with preservatives and fire retardants. The resulting product would be difficult or expensive to produce from solid sawn lumber.
  • veneers in different layers could be from different species or the same species cut with different methods.
  • the top veneer for example, could be provided with a linear cut naturally durable hardwood, while the remaining veneers can be from lower cost rotary peeled wood.
  • the deck boards and other deck components may further comprise a surface finishing system, including but not limited to an overlay or coating that provides or increases impact resistance, durability, aesthetics, fade protection, and stain resistance, while also covering and protecting joints or seams between veneers in a layer (e.g., where the pieces of veneer in a particular layer, such as the top surface layer, meet), or between layers of veneers (particularly along the sides or ends of a board). Covering these joints/seams also improves the visual appearance of the final product.
  • a surface finishing system including but not limited to an overlay or coating that provides or increases impact resistance, durability, aesthetics, fade protection, and stain resistance, while also covering and protecting joints or seams between veneers in a layer (e.g., where the pieces of veneer in a particular layer, such as the top surface layer, meet), or between layers of veneers (particularly along the sides or ends of a board). Covering these joints/seams also improves the visual appearance of the final product.
  • the finished deck board ranges from 0.25 inches to 5.5 inches in thickness.
  • the number of layers or veneers to manufacture a finished deck board depends on the thickness of the layers and the desired thickness of the deck board.
  • the surface finishing system comprises both an aesthetic component 40, 42 and a protective component 44, and may be applied to the bottom surface as well as the top surface. In additional embodiments, some or all elements of the surface finishing system may also be applied to the sides and ends of the deck board or component.
  • the aesthetic component comprises one or more base layers 40, which acts a primer or cushion layer which builds the foundation for the rest of the layers of the surface finishing system.
  • the base layer may be opaque.
  • One or more visually aesthetic layers 42 may then be placed on the base layer or layers.
  • the visually aesthetic layer can be a pre-printed paper layer, or can be printed directly onto to the base layer by means of a printer or printers in the manufacturing line, or may be integrated as part of the base layer.
  • a high-resolution digital image or images are printed on the base layer to create a digitally reproduced board with a desired appearance (and, in some embodiments, texture). This can replicate the appearance and/or texture of any material.
  • One or more protective layers 44 may then be applied over the base and/or visually aesthetic layers to provide durability, impact resistance, stain and wear resistance, UV/fade resistance, water resistance, and a skid- resistant surface where needed.
  • a deck board 2 may have a unique profile in cross-section to wick moisture away from the deck board.
  • the profile comprises curved edges with a channel or concave indentation 8 extending along the length of each board for hidden fasteners.
  • the width of the flat section of the bottom of the board may be less than the width of the flat section of the top.
  • the engineered wood of the present invention comprise flake geometry similar to OSB or LSL materials.
  • Preservatives include, but are not limited to, zinc borate, acid copper chromate (ACC), alkaline copper quaternary (ACQ), chromated copper arsenate (CCA), copper azole (CA), creosote, micronized copper, pentachlorophenol, and/or propiconazole (subject to regional requirements and limitations).
  • preservatives may include those that are standardized by the American Wood Protection Association and U.S. EPA labeled for the described end use.
  • Coatings include, but are not limited to, PVDF (poly(vinylidene fluoride), polyurea, polyester polyurethane, automotive polyurethane, PDMS-co-EPOXY, melamine, PDMS-ether-imide, acrylic, and PVC.
  • Coatings additives may include, but are not limited to, aluminum oxide, silicon oxide or other materials to impart specific properties.
  • the coating system is HAPs free, with a low VOC level.
  • the coating is bulk water resistant, slip resistant, wear and erosion resistant, UV resistant, color fast, impact resistant (e.g., scratch, pencil, heel marks), and chemical resistant. Coatings are flexible enough to tolerate expansion and contraction due to temperature, humidity and weather fluctuations.
  • the coating composition comprises a functional thermoplastic oligomer or polymer, a crosslinker, a catalyst, pigments, additives, and solvent.
  • the functional thermoplastic oligomer or polymer has suitable functionality such as hydroxyl, carboxyl, amino, acetoacetyl, vinyl, epoxy, cyclic carbonate, isocyanates, isothiocyantes, malonates that are capable of undergoing crosslinking reactions via condensation, addition, radical or UV7E beam radiation.
  • Such functional groups are covalently attached to oligomers or polymers with number average molecular weight ranging between 500 grams per mol and 200000 grams per mol such as, but not limited to, fluoropolymers like poly tetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), perfluorinated vinyl ether (PEVE), silicones, polyesters, polyethers, polyamides, polyimides, polyether imides, polyether imide silicone copolymer, polybenzimidazole, polybenzoxazole, polythiazole, polyvinyl carbazole, polyolefins, poly cycloolefin copolymers and any mixture thereof.
  • fluoropolymers like poly tetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), perfluorinated vinyl ether (PEVE), silicones, polyesters, polyethers, polyamides, polyimides, polyether imides, polyether imide silicone copo
  • crosslinker examples include, but are not limited to, polymeric isocyantes, polyaspartic acid, melamine-formaldehyde condensates, urea-formaldehyde condensates, quinidine-formaldehyde condensates, and acrylate terminated oligomer.
  • the catalyst examples include, but are not limited to, (i) a metal catalyst like dibutyl tin dilaurate, or dibutyl tin oxide; (ii) an acid catalyst like p-toluene sulfonic acid; and (iii) a base catalyst like sodium methoxide, sodium benzoate, dicyclo bis (2,2,2) octane, or dibutyl urea.
  • pigments include, but are not limited to, oxides of iron, titanium, zirconium, vanadium, chromium, nickel, cobalt and zinc.
  • additives include, but are not limited to, (i) dispersing aids such as cationic, non-ionic and anionic surfactants; (ii) flow control agents such as silica; and (ii) slip additives such as coarse sands, ultra-high molecular weight polyolefins.
  • solvents include, but are not limited to, water, methyl ethyl ketone, acetone, butyl acetate, dimethyl formamide, dimethyl acetamide and N-methyl pyrrolidone.
  • Methods of applying the coating or coatings include, but are not limited to, spraying of a liquid coating, or electrostatic coating with powder materials from any of the above-described coating compositions, following by curing using thermal or UV-E beam radiation.
  • Coatings can be made in a separate process and subsequently attached to the treated, layered substrate. This pre-made coating could be, as an example, attached by various methods (e.g. friction fitted, adhesive bonded) to any combination of top, sides, bottom and ends of the substrate.
  • the present invention comprises a manufacturing process to make a layered manufactured wood product usable for decking applications.
  • Veneer sections are peeled from a log, dried, and then treated with preservatives and special formulations and treatments as described above. Veneer layers may receive different treatments.
  • the veneers are re-dried, then laid out (with the immediately adjacent subsurface layers cross-direction to the other layers) with adhesive, and heat pressed to form a billet.
  • the top layer (and possibly the bottom layer) are treated in-line with both the aesthetic component and a protective component/coating of the surface finishing system, as described above, following by finishing processes (e.g., edge treatment). Examples of prior art LVL manufacturing processes are disclosed in Tsuda, U.S. Pat. No. 5,662,760, and Lahtinen, U.S. Pat. No. 4,608, 106, which are incorporated herein by specific reference for all purposes.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

Système de construction d'un pont à l'aide de produits en bois modifiés, comprenant, mais sans s'y limiter, un bois d'oeuvre composite structural (SCL). Des planches de pont peuvent être formées à partir d'une pluralité de couches de placage traitées par des traitements de protection contre l'incendie, des conservateurs et/ou d'autres traitements chimiques, qui peuvent être spécifiques à une couche de placage particulière, et assemblées à l'aide d'adhésifs liant les couches ensemble en une pile, ce qui permet d'obtenir une planche de pont ayant des propriétés uniques dans l'ensemble. Les couches de placage directement adjacentes aux deux couches de face extérieures peuvent être positionnées de telle sorte que la direction du grain de bois est transversale à la direction du grain de bois dans les couches de surface. Les planches sont également soumises à un traitement de finition de surface multicouche avec des composants esthétiques et un composant de protection.
PCT/US2018/052747 2017-09-25 2018-09-25 Système de pont en bois modifié extérieur WO2019060919A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US201762562523P 2017-09-25 2017-09-25
US62/562,523 2017-09-25
US201862631978P 2018-02-19 2018-02-19
US201862631983P 2018-02-19 2018-02-19
US62/631,978 2018-02-19
US62/631,983 2018-02-19

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WO2019060919A1 true WO2019060919A1 (fr) 2019-03-28

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WO (1) WO2019060919A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220371219A1 (en) * 2021-05-20 2022-11-24 Washington State University Thermally modified composite wood-strand products for construction and other applications

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818595A (en) * 1984-04-25 1989-04-04 Delphic Research Laboratories, Inc. Fire barrier coating and fire barrier plywood
US6319431B1 (en) * 1997-11-26 2001-11-20 Futuratec Cc Preservative and fire retardant composition and combination and process
US6620349B1 (en) * 2000-07-13 2003-09-16 Richard A. Lopez Fire retardant compositions and methods for preserving wood products
US20070044911A1 (en) * 2005-08-25 2007-03-01 Osmose, Inc. Layered Wood Composites

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Publication number Priority date Publication date Assignee Title
CA2656602C (fr) * 2009-02-27 2017-06-06 Roarockit Skateboard Company Stratifies et procede de fabrication de stratifies a couches d'epaisseur non uniforme
US20140017452A1 (en) * 2012-07-13 2014-01-16 Floor Iptech Ab Digital coating and printing
US20150050443A1 (en) * 2013-08-14 2015-02-19 Boa-Franc Composite engineered floor board having an oriented strand board (osb) stabilizing base
US10590648B2 (en) * 2017-02-06 2020-03-17 Terry Allen Tebb Outdoor wood decking board

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818595A (en) * 1984-04-25 1989-04-04 Delphic Research Laboratories, Inc. Fire barrier coating and fire barrier plywood
US6319431B1 (en) * 1997-11-26 2001-11-20 Futuratec Cc Preservative and fire retardant composition and combination and process
US6620349B1 (en) * 2000-07-13 2003-09-16 Richard A. Lopez Fire retardant compositions and methods for preserving wood products
US20070044911A1 (en) * 2005-08-25 2007-03-01 Osmose, Inc. Layered Wood Composites

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